ALPINE-CVE-2021-3996

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Source
https://security.alpinelinux.org/vuln/CVE-2021-3996
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2021-3996
Upstream
Published
2022-08-23T20:15:08Z
Modified
2026-08-27T22:18:01Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows a local user on a vulnerable system to unmount other users' filesystems that are either world-writable themselves (like /tmp) or mounted in a world-writable directory. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.

References

Affected packages

Alpine:v3.12
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.13
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.14
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.15
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.16
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.17
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.18
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.19
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.20
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.21
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.22
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.23
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"
Alpine:v3.24
util-linux

Package

Name
util-linux
Purl
pkg:apk/alpine/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.34
Fixed
2.37.3-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3996.json"